Just asked Dr FM for an opinion. She is currently working in London and is pretty much in the heart of all this. She says
“no it is not considered airborne
it’s transmitted via droplets
if someone coughs, talks sneezes near you, you can breathe in the droplets if you are too close hence social distancing. Certain procedures can aerosol secretions.
infected droplets can land on things which is why washing hands are so important. “
if it was airborne you would be infected at much greater distances.
edit (I shouldn’t have asked - I am still getting info,)
Because it is not airborne masks are of minimal benefit unless you actually have the virus or a health professional who is more at risk because of aerosol secretions.
measles is airborne, so much more contagious. It literally can hang in the air for awhile after you are gone.
because it is a new virus there is still a lot to learn.